A Short Note on Essentially Σ1 Sentences. - Franco Montagna; Duccio Pianigiani (Logica Universalis, 2013)

Trial and error Mathematics II: Dialectical Sets and Quasidialectical Sets, their Degrees, and their Distribution within the class of Limit Sets. - Jacopo Amidei; Duccio Pianigiani; Luca San Mauro; Andrea Sorbi (Rev. Symb. Log., 2016)

Trial and error Mathematics I: Dialectical and Quasidialectical Systems. - Jacopo Amidei; Duccio Pianigiani; Luca San Mauro; Giulia Simi; Andrea Sorbi (Rev. Symb. Log., 2016)

Trial and error mathematics: Dialectical systems and completions of theories. - Jacopo Amidei; Uri Andrews; Duccio Pianigiani; Luca San Mauro; Andrea Sorbi (J. Log. Comput., 2019)

A note on uniform density in weak arithmetical theories. - Duccio Pianigiani; Andrea Sorbi (Arch. Math. Log., 2021)